I use this command:

ansible all -m ping

with this ansible.cfg

[defaults]
inventory = hosts

and this hosts file:

[all]
dockervm.mshome.net ansible_become=true ansible_become_pass=0000

I get this error:

dockervm.mshome.net | FAILED! => {
    "msg": "Missing sudo password"
}

the password is really 0000, but ansible does not see it, how can I make it work? I have tried '0000' and "0000" without success.